The airline industry has seen its fair share of turbulence over the past year. Controversies overs passenger “bumping” and the handling of pets have dominated headlines and news coverage. Now, safety concerns are being added to that list, after budget airline Allegiant found itself at the center of a 60 Minutes investigation. We look at the state of the airlines, the issues currently facing the industry, and what flyers can expect as we approach the busy summer travel season.